Resty.redis Expire time Problem solving method

When using the Resty.redis module operation in Ngx.lua, the value of the key default set is not TTL time, if the key changes and does not need to be implemented from the program to implement the modification directly after the operation to a default expire time to

code is as follows	copy code
OK, err = red : Set (stbid,value)             if not OK then                  Ngx.say ("failed to set action 1 ", Stbid, err)                 Return             End         Red:expire (stbid, "36000")--add expire time 36000ms